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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="lib/js/jquery.js"></script>
    <link rel="stylesheet" href="lib/css/bootstrap.css">
</head>

<body>
    <div>
        <address>1
            <article>2</article>
        </address>
        <div>1</div>
        <div>1</div>
    </div>
    <div>2</div>
    <script>
        // var div = document.getElementsByTagName("div");
        var $div = $("div  address article");
        $div.html("ajsldkfjlasdfj");
        $div.css("color", "blue");

        var d2 = $("div");
    </script>
</body>